Pumping-jack.



J. SCHULIEN.

PUMPING JACK.

APPLICATION FILED NOV. 11. 1914.

1,146,765. 7 Pdtented July 13, 1915.

J'NVENTUR, c/DSEPH 50/04/50 JOSEPH SCHULIEN, OF DELPHOS, OHIO, ASSIGNOR TO THE GEORGE W. GRIMES i COMPANY, OF BLUFFTON, INDIANA, A CORPORATION.

PUMPING-JACK.

Application filed November 11, 1914.

To all whom it may concern:

Be it known that I, Josnrn' SOI-IULIEN, a citizen of the United States, residing at Delphos, in the county of Allen and State of Ohio, have invented certain new and useful Improvements in Pumping-Jacks, of which the following is a specification.

This invention relates to improvements in pumping jacks.

In the work of pumping oil wells there is employed a support frame capable of being anchored at a location adjacent to the well. A triangular shaped rocker member is trunnioned on this frame in such manner that its lower head is capable of being reciprocated in a horizontal direction. This reciprocatory movement of the lower head is accompanied by a reciprocatory movement vertically of the upper head. Carried by this upper head is a member to which the piston rod, or, as commonly designated, the polish rod of the well pump is connected. These pumping jacks are made in many different styles but most generally consist of the main elements combined and arranged in the manner just described."

The result greatly to be desired in the work of operating the polish rod, is to obtain a movement of same in a true line vertically.

The object, therefore of this invention is to provide an attachment for pumping jacks whereby a reciprocation of the polish rod in a true line vertically may be obtained.

More specifically the purposes of the invention are to provide a device of this character which will be simple and economical of manufacture, and which will be rugged and durable, and not liable to get out of order or repair.

These objects are accomplished by and the invention is shown in the construction, combination and arrangement of parts described in this specification, defined in the appended claims, and illustrated in the accompanying views in which- In the drawings the different parts of the device are identified by suitable characters of reference applied thereto in the several views in which Figure 1 is a view of my invention applied to operative position in connection with a pumping jack of usual construction. Fig. 2 is a vertical transverse sectional view taken on the line 22 in Fig. 1. Fig. 3 is a horizontal sectional view taken on the Specification of Letters Patent.

Patented July is, was.

Serial No; 871,468.

line 38 in Fig. 1. Fig. 4 is a detached view of the head block 1.,

The well known pumping jack frame shown consists of the pairvof bars A adapted to be secured at their lower ends to a suitable base structure A similar pair of bars G which are connected at their top ends to the top ends of the bars A, by a hip pin D are adapted to be secured by suitable anchoring means E to the well casing F. The triangular rocker member has the bearing block G trunnioned on the hip pin D. The heel block H carries a suitable connection for the link member of the shackle rod line that 6X". tends to the power station (not shown). This link member consists of a pair of bars J which have their forward ends connected loosely to the heel block and the rear ends are brought together in the form of a head J adapted to be connected to the shackle rod line K.

It is apparent that the reciprocatory movement of the shackle rod line causes a similar movement of the heel block H. The line of travel of the heel block is that of an arc struck from the center of the hip pin D. Also the line of travel of the head block of the rocker member is that of an are.

Now to render possible the obtaining of a trulyvertical line of travel for the polish rod L, the several parts constructed, combined and arranged as shown, have been provided.

-1 designates the head block. This head block has its frontal portion of forked form, the space between the ends 2 of this block being ample to afford free clearance of the polish rod. Stud pins 3 which are secured in these fork ends 2 constitute bearings upon which are disposed the upper ends of the links 4. The lower ends of these links are loosely connected to the stud pins 5 which are secured to the fork ends 6 of the reach arm head block 7. Trunnioned at a point equidistant from the stud pins 3 and 5, is a cross head 8. This crosshead is of sufficient area in cross section to have the rigidity and strength necessary to support the polish rod. In a central aperture 9 of this cross head, is seated a collar 10 which is adapted to be secured at desired location on the polish rod.

11 designates the reach arm. The length block 7 to the center of its rear head 12 must be the same as the distance between the center 0]": the hip pin D and the center of the stud pins 3. To render this reach arm capable of adjustment in length, the

tight fitting turn buckle 12 is provided. It

will be understood, however, that any suitable means of adjustment may be used. Or, in instances where the rocker arm length is predetermined, adjustment means for the reach arm is unnecessary.

A support for the rear end of the reach arm consists of the rigid support bar 18. The upper end of this support bar is provided with a pin 14-. to which the head 12 is loosely connected, and the lower end of this support bar may be provided with a base portion 15 adaptable to be secured to a suitable anchorage,

This invention while shown applied to use in connection with a pumping jack of all metal construction is capable of being used in connection with a jack of any construction operated upon the principle shown. Where, as in this instance, the trunnioned rocker member is of metal construction, the bores 1 and 1 receive the ends of the bars M and N respectively. By

- providing the ears 1" it is possible to arrange connections whereby this head block 1 may be secured to the rocker member of wooden construction.

The advantage afforded by this invention is readily apparent. The reciprocatory movement imparted from the shackle rod line K causes the usual swinging movement of the rocker member. The links t having their ends hinged to the head block 1 and the head block 7 are swung in such manner that the cross head 8 trunnioned at their center, is caused to be carried in a true and unvarying direction vertically. Thus, the polish rod is moved in a true line vertically, vibration of the different parts of the jack is reduced to a minimum, lost motion is minimized, and the power supplied by the shackle rod line is conserved. Moreover, all tendency of the polish rod to abnormally strain the packing box in the well head, and to mutilate the packing is overcome.

By virtue of this invention,leakage at'the packing box is minimized, facility of connecting to the polish rod is afforded, and there is effected material economy in the operation of pumping.

Copies of this patent may be obtained for five cents each, by addressingthe hat I claim as my invention and desire to secure by Letters Patent, is

1. In a pumping jack in combination with its trunnioned rocker member, a head block, a reach arm, a supporting member for the rear end of the reach arm, a pair of links having their ends connected to the head block and to the forward end of the reach arm, and a cross head adapted to be secured to a polish rod, trunnioned between the saidlinks.

2. In a pumping jack incombination with the trunnioned rocker member, a bifurcated head block therefor, a reach arm, a bifureated head block therefor a supporting member adapted tobe secured to a rear end of the reach arm, a pair of links having their ends connected to said head blocks,

and a cross head for the polish rod trunnioned between the said links.

3. In a pumping jack, in combination with its trunnioned rocker member, a reach arm, a supporting member for one end of the reach arm, a link member having its ends loosely connected to the free ends of the rocker member and the reach arm, and a cross head trunnioned at the'center of the link member.

4-. In a pumping jack, in combination with its trunnioned rocker member, a link member connected loosely at its one end to the rocker member and having pivotal connection at its center adapted to be fastened to a polish rod, and guiding means to cause the other end of the link member to move through the same areas that are through which the rocker member is moved;

5. A pumping jack comprising a frame, a rocker member trunnioned on said-frame, a link member having its one end pivotally connected to the head of the trunnioned member, a cross head trunnioned at the center of the link member and adapted to be connected to a polish rod, means to guide the free end of the link member through an arc the same as that through which the head of the rocker member is moved.

In testimony whereof I afi'ix my signature in presence of two witnesses.

, JOSEPH SGHULIEN.

Witnesses: I

EDGAR G. COTTINGHAM, THOMAS Let-RYAN.

Commissioner of latents,

Washington, D. G. 

